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. Author manuscript; available in PMC: 2013 Dec 29.
Published in final edited form as: Dev Psychopathol. 2010 May;22(2):10.1017/S0954579410000039. doi: 10.1017/S0954579410000039

Figure 2.

Figure 2

Figure 2

A three-dimensional reconstruction of the R-R interval (RRI) signal extracted from the continuous electrocardiogram (ECG) signals in phase space for a single individual (A) under various external and internal stimulation conditions : (a) baseline (B1) RRI before alcohol administration, (b) baseline (B2) RRI after alcohol administration, (c) negative picture cue exposure after alcohol administration, (d) paced breathing after alcohol administration, (e) baseline (B1) RRI before placebo drink administration, (f) baseline (B2) RRI after placebo drink administration, (g) negative picture cue exposure after placebo drink administration, and (h) paced breathing after placebo drink administration. Phase space data were plotted with a delay parameter of 1 so that no data points were skipped (Webber & Zbilut, 2005) and with an embedding dimension parameter of 4 (3 for paced breathing).